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–We should do what we can _____ the endangered animals.` --Yes, it’s duty_____ them.
#50588
A
save, to protect
B
save, protect
C
to save, protect
D
to save, to protect
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Mom makes me eat an apple a day      the doctor away.
#49304
A
keeps
B
is kept
C
to keep
D
keeping
The teacher wants us_______the classroom.
#50196
A
to clean
B
cleans
C
cleaning
D
clean
This is the best way I could think of ______ him ______ computer games.  
#48905
A
to stop; playing
B
stopping; playing
C
stop; to play
D
stopping; to play
I enjoy_______ the car because I can be outside.
#48669
A
wash
B
to wash
C
washing
D
washes
He is so poor that he has no house _____.
#48554
A
to live
B
living
C
living in
D
to live in